*/
    fun commonName(cn: String) =
      apply {
        this.commonName = cn
      }

    /** Sets the certificate's organizational unit (OU). If unset this field will be omitted. */
    fun organizationalUnit(ou: String) =
      apply {
        this.organizationalUnit = ou
      }

    /** Sets this certificate's serial number. If unset the serial number will be 1. */
    fun serialNumber(serialNumber: BigInteger) =